using System;

using System.Xml;

using NodaTime;

public class Program

{

    public static void Main()

    {

        DateTime start = new DateTime(2016,8,1);

        DateTime end = new DateTime(2017,8,31);

        Console.WriteLine("Between {0:yyyy/MM/dd} and {1:yyyy/MM/dd} are {2} years and {3} noda years",

                          start, end, GetYears(start,end), GetNodaYears(start, end));

        start = new DateTime(2016,8,1);

        end = new DateTime(2017,8,1);

        Console.WriteLine("Between {0:yyyy/MM/dd} and {1:yyyy/MM/dd} are {2} years and {3} noda years",

                          start, end, GetYears(start,end), GetNodaYears(start, end));

        start = new DateTime(2016,8,1);

        end = new DateTime(2017,7,31);

        Console.WriteLine("Between {0:yyyy/MM/dd} and {1:yyyy/MM/dd} are {2} years and {3} noda years",

                          start, end, GetYears(start,end), GetNodaYears(start, end));

        start = new DateTime(2015,8,1);

        end = new DateTime(2016,8,1);

        Console.WriteLine("Between {0:yyyy/MM/dd} and {1:yyyy/MM/dd} are {2} years and {3} noda years",

                          start, end, GetYears(start,end), GetNodaYears(start, end));

        start = new DateTime(2015,8,1);

        end = new DateTime(2016,7,31);

        Console.WriteLine("Between {0:yyyy/MM/dd} and {1:yyyy/MM/dd} are {2} years and {3} noda years",

                          start, end, GetYears(start,end), GetNodaYears(start, end));

        start = new DateTime(2014,1,1);

        end = new DateTime(2015,12,31);

        Console.WriteLine("Between {0:yyyy/MM/dd} and {1:yyyy/MM/dd} are {2} years and {3} noda years",

                          start, end, GetYears(start,end), GetNodaYears(start, end));

        start = new DateTime(2014,1,1);

        end = new DateTime(2016,12,31);

        Console.WriteLine("Between {0:yyyy/MM/dd} and {1:yyyy/MM/dd} are {2} years and {3} noda years",

                          start, end, GetYears(start,end), GetNodaYears(start, end));

        start = new DateTime(2014,1,1);

        end = new DateTime(2017,12,31);

        Console.WriteLine("Between {0:yyyy/MM/dd} and {1:yyyy/MM/dd} are {2} years and {3} noda years",

                          start, end, GetYears(start,end), GetNodaYears(start, end));

    }

    private static double GetYears(DateTime start, DateTime end){

        double DaysInAYear = 365;               

        TimeSpan ts1 = end.Subtract(start);

        return ts1.TotalDays / DaysInAYear;;

    }

    private static long GetNodaYears(DateTime start, DateTime end)

    {

        LocalDate nStart = new NodaTime.LocalDate(start.Year, start.Month, start.Day); 

        LocalDate nEnd = new NodaTime.LocalDate(end.Year, end.Month, end.Day); 

             Period period = Period.Between(nStart, nEnd,

                                       PeriodUnits.Years | PeriodUnits.Days);

        return period.Years;

    }

}